Table 2

 Differential diagnosis of depression in Parkinson’s disease

DBS, deep brain stimulation.
• Major depressive episode
• Adjustment disorder
• Mood disorder caused by a general medical condition (infection, subdural haematoma)
• Drug induced mood disorder
• Dementia
• “Non-motor fluctuation”
• Transient mood changes in relation to DBS (dysphoria, pseudobulbar crying)